Finding the Third Proportional to 265,128 and 401,552

Step by Step Solution

1. Step 1: Write the proportion equation
   265,128 : 401,552 = 401,552 : x
2. Step 2: Convert to fraction form
   265,128/401,552 = 401,552/x
3. Step 3: Cross multiply
   265,128x = 401,552 × 401,552
4. Step 4: Simplify right side
   265,128x = 161,244,008,704
5. Step 5: Solve for x
   x = 161,244,008,704/265,128
6. Step 6: Final answer
   x = 608,174.20